physics...

Test Preparation SAT Subject Test Preparation
1

<p>Can somebody help me answer these questions with work shown please? thanks.</p>

<ol>
<li><p>calculate the force of gravitational attraction between two spheres of mass 10.1 kg and 45.4 kg that are 38.5 m apart.</p></li>
<li><p>A 69.8 kg student sits at a desk 1.75 m away from a 78.9 kg student. What is the magnitude of the gravitational force between the two students? (G=6.673 x 10^-11 N.m^2/kg^2)</p></li>
<li><p>By what factor would your weight be multiplied if Earth were 1/2 as massive and Earth's diameter remained unchanged?</p></li>
<li><p>Imagine you are standing atop a ladder so tall that you are 2 Earth radii from Earth's center. What is your weight at the top of the ladder, relative to your weight on the ground?
sporty04 is online now</p></li>
</ol>

2

<p>ignore the “sporty04 is online now”…i don’t know why it’s there…lols</p>

3

<p>Can somebody please help me with these physics problems??</p>

4

<p>You need to use the gravitational force equation, where you plug in both masses, the distance, and the gravitational constant. I don’t remember what it is though. Google it, youll find it.</p>

5

<p>Use the equation:
F = (G * M1 * M2) / R^2</p>